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ATA5282 Datasheet

  • ATA5282

  • ULTRA LOW POWER 125 KHZ 3D WAKE UP RECEIVER WITH RSSI

  • 23頁(yè)

  • ATMEL   ATMEL

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Features
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Three Input Channels for 3D Antennas
2.8 mV
PP
Sensitivity Typically
Ultra Low Current Operation Consumption
2 碌A(chǔ) Standby Current Typically
4 碌A(chǔ) Active Current Typically
Power Supply 2 V to 4.2 V
Carrier Frequency Range from 100 kHz to 150 kHz
Wake-up Function for a Microcontroller
Header Detection
Baud Rate up to 4 kbps (ASK Modulation)
Bi-directional Two-wire Interface
ESD According to Automotive Requirements
Benefits
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Digital RSSI for Field Strength Measurement
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Coils Input Range from 2.8 mV
PP
to 2.8 V
PP
Typically
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High Sensitivity
Ultra Low Power
125 kHz 3D -
Wake-up
Receiver with
RSSI
ATA5282
Preliminary
Applications
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Passive Entry Go (PEG)/Car Access
Position Indicator
Home Access Control
RFID Systems
Description
The ATA5282 is a 125-kHz ultra low power receiver IC with three input channels for
Passive Entry Go applications. It includes all circuits for an LF wake-up channel. The
three sensitive input stages of the IC amplifier demodulate and measure the input sig-
nal from the antenna coils. The microcontroller interface of the IC outputs the data
signal as well as the measured RSSI values. During standby mode, the header detec-
tion unit monitors the incoming signal and generates a wake-up signal for the
microcontroller if the IC receives a valid 125-kHz carrier signal.
By combining the IC with an antenna coil, a microcontroller, an RF transmitter/trans-
ceiver and a battery, it is possible to design a complete hands-free key for Passive
Entry Go applications.
Rev. 4694B鈥揂UTO鈥?6/04

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